Lanvin leather cap-toe flats size 37.5

Turquoise leather Lanvin round-toe flats with black cap toes and stacked heels. Fit: This style typically runs a half size small. Heels: 0.25" The size is not written anywhere, or is not visible anymore. I bought them from The Real Real and the size indicates was 8, but when measured with another similar pair, size 37.5, they were were just 1-2 mm bigger.